block: flag block devices as supporting IOCB_WAITQ

Signed-off-by: Jens Axboe <axboe@kernel.dk>

block: flag block devices as supporting IOCB_WAITQ
Signed-off-by: Jens Axboe <axboe@kernel.dk>
a304f074 · Jens Axboe · c2a25ec0 · a304f074
Commit a304f074 authored May 22, 2020 by Jens Axboe
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fs/block_dev.c fs/block_dev.c +1 -1

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--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -1851,7 +1851,7 @@ static int blkdev_open(struct inode * inode, struct file * filp)
 	 */
 	filp->f_flags |= O_LARGEFILE;
-	filp->f_mode |= FMODE_NOWAIT;
+	filp->f_mode |= FMODE_NOWAIT | FMODE_BUF_RASYNC;
 	if (filp->f_flags & O_NDELAY)
 		filp->f_mode |= FMODE_NDELAY;